Document Detail

Rumen ciliate protozoa: effects on digestion in the stomach of sheep.
MedLine Citation:
PMID:  6308075     Owner:  NLM     Status:  MEDLINE    
Six wethers, each fitted with a rumen cannula and duodenal reentrant cannula, were used to study effects of ciliate protozoa on rumen digestion and metabolism. A corn: corn silage (1:1) diet was fed for two periods. During the first period, defaunation was attempted with nonyl phenol ethylene oxide. Defaunation was complete in three sheep and partial in the other three sheep in which a reduced population of a small Entodinium sp. was observed. During the second period the sheep were inoculated with ciliate protozoa, which established a large population in all animals. Apparent digestion in the stomach of organic matter and starch was higher when a large protozoal population was present. Amino acid flow through the duodenum was greater in defaunated animals. A large population of ciliates was associated with increases in both rumen ammonia and plasma urea but had a stabilizing effect on ruminal pH. Volatile fatty acids were higher in the defaunation period, but there were only small differences of molar proportions of the acids between the two periods. Effects of ciliate protozoa are related to animal performance.
D M Veira; M Ivan; P Y Jui
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of dairy science     Volume:  66     ISSN:  0022-0302     ISO Abbreviation:  J. Dairy Sci.     Publication Date:  1983 May 
Date Detail:
Created Date:  1983-09-09     Completed Date:  1983-09-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985126R     Medline TA:  J Dairy Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1015-22     Citation Subset:  IM    
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MeSH Terms
Amino Acids / metabolism
Ammonia / metabolism
Ciliophora / metabolism*
Dietary Fiber / metabolism
Fatty Acids, Volatile / metabolism
Hydrogen-Ion Concentration
Nitrogen / metabolism
Rumen / metabolism*,  parasitology
Sheep / physiology*
Starch / metabolism
Reg. No./Substance:
0/Amino Acids; 0/Fatty Acids, Volatile; 7664-41-7/Ammonia; 7727-37-9/Nitrogen; 9005-25-8/Starch

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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